材料科学
共晶体系
极限抗拉强度
合金
韧性
腐蚀
挤压
冶金
延伸率
动态再结晶
复合材料
热加工
作者
Mostafa Najafi,Hamed Mirzadeh,Rouhollah Mehdinavaz Aghdam,M. Emamy
标识
DOI:10.1177/02670836241274631
摘要
Mechanical properties and in vitro corrosion behavior of Mg-Cu alloys in the simulated body fluid solution were investigated. Copper addition led to grain refinement and formation of α–Mg/Mg 2 Cu eutectics, resulting in the best combination of mechanical properties for the as-cast Mg-0.5Cu alloy, for which the values of the yield stress, ultimate tensile strength, total elongation, and tensile toughness were obtained as 71 MPa, 164 MPa, 5.8%, and 7.5 MJ/m 3 , respectively. Hot deformation by extrusion led to fine grain sizes via dynamic recrystallization and breaking up the eutectics. Accordingly, the extruded Mg-0.1Cu alloy showed tensile toughness of ∼30 MJ/m 3 and good corrosion resistance; while Mg-1.2Cu alloy with a distinct protective surface layer was also considered as a viable alternative for biomedical applications.
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